About changing the extension and UA to be imported

General questions
1

Hello Matomo team and community.

It is my understanding that Matomo sets the extensions and UA (UserAgent) to be imported in the DOWNLOAD_EXTENSIONS and EXCLUDED_USER_AGENTS files in import_logs.py.

I want to update my matomo from 3.14.1 to 4.5.0.
So I checked the source and found that the contents of DOWNLOAD_EXTENSIONS and EXCLUDED_USER_AGENTS have changed significantly.

Is there any effect of this change, such as an increase or decrease in the following values?

-visit
-pageview
-download

Best regards

2

I think you will loose bad visits (robots, spiders, etc.).
So no significant changes in the visits, pageview and downloads…